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e48354ce NB |
1 | /******************************************************************************* |
2 | * This file contains the main functions related to Initiator Node Attributes. | |
3 | * | |
4 | * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. | |
5 | * | |
6 | * Licensed to the Linux Foundation under the General Public License (GPL) version 2. | |
7 | * | |
8 | * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | ******************************************************************************/ | |
20 | ||
21 | #include <target/target_core_base.h> | |
e48354ce NB |
22 | |
23 | #include "iscsi_target_core.h" | |
24 | #include "iscsi_target_device.h" | |
25 | #include "iscsi_target_tpg.h" | |
26 | #include "iscsi_target_util.h" | |
27 | #include "iscsi_target_nodeattrib.h" | |
28 | ||
29 | static inline char *iscsit_na_get_initiatorname( | |
30 | struct iscsi_node_acl *nacl) | |
31 | { | |
32 | struct se_node_acl *se_nacl = &nacl->se_node_acl; | |
33 | ||
34 | return &se_nacl->initiatorname[0]; | |
35 | } | |
36 | ||
37 | void iscsit_set_default_node_attribues( | |
38 | struct iscsi_node_acl *acl) | |
39 | { | |
40 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
41 | ||
42 | a->dataout_timeout = NA_DATAOUT_TIMEOUT; | |
43 | a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES; | |
44 | a->nopin_timeout = NA_NOPIN_TIMEOUT; | |
45 | a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT; | |
46 | a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS; | |
47 | a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS; | |
48 | a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS; | |
49 | a->default_erl = NA_DEFAULT_ERL; | |
50 | } | |
51 | ||
f760903a | 52 | int iscsit_na_dataout_timeout( |
e48354ce NB |
53 | struct iscsi_node_acl *acl, |
54 | u32 dataout_timeout) | |
55 | { | |
56 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
57 | ||
58 | if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) { | |
59 | pr_err("Requested DataOut Timeout %u larger than" | |
60 | " maximum %u\n", dataout_timeout, | |
61 | NA_DATAOUT_TIMEOUT_MAX); | |
62 | return -EINVAL; | |
63 | } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) { | |
64 | pr_err("Requested DataOut Timeout %u smaller than" | |
65 | " minimum %u\n", dataout_timeout, | |
66 | NA_DATAOUT_TIMEOUT_MIX); | |
67 | return -EINVAL; | |
68 | } | |
69 | ||
70 | a->dataout_timeout = dataout_timeout; | |
71 | pr_debug("Set DataOut Timeout to %u for Initiator Node" | |
72 | " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl)); | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
f760903a | 77 | int iscsit_na_dataout_timeout_retries( |
e48354ce NB |
78 | struct iscsi_node_acl *acl, |
79 | u32 dataout_timeout_retries) | |
80 | { | |
81 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
82 | ||
83 | if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) { | |
84 | pr_err("Requested DataOut Timeout Retries %u larger" | |
85 | " than maximum %u", dataout_timeout_retries, | |
86 | NA_DATAOUT_TIMEOUT_RETRIES_MAX); | |
87 | return -EINVAL; | |
88 | } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) { | |
89 | pr_err("Requested DataOut Timeout Retries %u smaller" | |
90 | " than minimum %u", dataout_timeout_retries, | |
91 | NA_DATAOUT_TIMEOUT_RETRIES_MIN); | |
92 | return -EINVAL; | |
93 | } | |
94 | ||
95 | a->dataout_timeout_retries = dataout_timeout_retries; | |
96 | pr_debug("Set DataOut Timeout Retries to %u for" | |
97 | " Initiator Node %s\n", a->dataout_timeout_retries, | |
98 | iscsit_na_get_initiatorname(acl)); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
f760903a | 103 | int iscsit_na_nopin_timeout( |
e48354ce NB |
104 | struct iscsi_node_acl *acl, |
105 | u32 nopin_timeout) | |
106 | { | |
107 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
108 | struct iscsi_session *sess; | |
109 | struct iscsi_conn *conn; | |
110 | struct se_node_acl *se_nacl = &a->nacl->se_node_acl; | |
111 | struct se_session *se_sess; | |
112 | u32 orig_nopin_timeout = a->nopin_timeout; | |
113 | ||
114 | if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) { | |
115 | pr_err("Requested NopIn Timeout %u larger than maximum" | |
116 | " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX); | |
117 | return -EINVAL; | |
118 | } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) && | |
119 | (nopin_timeout != 0)) { | |
120 | pr_err("Requested NopIn Timeout %u smaller than" | |
121 | " minimum %u and not 0\n", nopin_timeout, | |
122 | NA_NOPIN_TIMEOUT_MIN); | |
123 | return -EINVAL; | |
124 | } | |
125 | ||
126 | a->nopin_timeout = nopin_timeout; | |
127 | pr_debug("Set NopIn Timeout to %u for Initiator" | |
128 | " Node %s\n", a->nopin_timeout, | |
129 | iscsit_na_get_initiatorname(acl)); | |
130 | /* | |
131 | * Reenable disabled nopin_timeout timer for all iSCSI connections. | |
132 | */ | |
133 | if (!orig_nopin_timeout) { | |
134 | spin_lock_bh(&se_nacl->nacl_sess_lock); | |
135 | se_sess = se_nacl->nacl_sess; | |
136 | if (se_sess) { | |
8359cf43 | 137 | sess = se_sess->fabric_sess_ptr; |
e48354ce NB |
138 | |
139 | spin_lock(&sess->conn_lock); | |
140 | list_for_each_entry(conn, &sess->sess_conn_list, | |
141 | conn_list) { | |
142 | if (conn->conn_state != | |
143 | TARG_CONN_STATE_LOGGED_IN) | |
144 | continue; | |
145 | ||
146 | spin_lock(&conn->nopin_timer_lock); | |
147 | __iscsit_start_nopin_timer(conn); | |
148 | spin_unlock(&conn->nopin_timer_lock); | |
149 | } | |
150 | spin_unlock(&sess->conn_lock); | |
151 | } | |
152 | spin_unlock_bh(&se_nacl->nacl_sess_lock); | |
153 | } | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
f760903a | 158 | int iscsit_na_nopin_response_timeout( |
e48354ce NB |
159 | struct iscsi_node_acl *acl, |
160 | u32 nopin_response_timeout) | |
161 | { | |
162 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
163 | ||
164 | if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) { | |
165 | pr_err("Requested NopIn Response Timeout %u larger" | |
166 | " than maximum %u\n", nopin_response_timeout, | |
167 | NA_NOPIN_RESPONSE_TIMEOUT_MAX); | |
168 | return -EINVAL; | |
169 | } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) { | |
170 | pr_err("Requested NopIn Response Timeout %u smaller" | |
171 | " than minimum %u\n", nopin_response_timeout, | |
172 | NA_NOPIN_RESPONSE_TIMEOUT_MIN); | |
173 | return -EINVAL; | |
174 | } | |
175 | ||
176 | a->nopin_response_timeout = nopin_response_timeout; | |
177 | pr_debug("Set NopIn Response Timeout to %u for" | |
178 | " Initiator Node %s\n", a->nopin_timeout, | |
179 | iscsit_na_get_initiatorname(acl)); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
f760903a | 184 | int iscsit_na_random_datain_pdu_offsets( |
e48354ce NB |
185 | struct iscsi_node_acl *acl, |
186 | u32 random_datain_pdu_offsets) | |
187 | { | |
188 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
189 | ||
190 | if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) { | |
191 | pr_err("Requested Random DataIN PDU Offsets: %u not" | |
192 | " 0 or 1\n", random_datain_pdu_offsets); | |
193 | return -EINVAL; | |
194 | } | |
195 | ||
196 | a->random_datain_pdu_offsets = random_datain_pdu_offsets; | |
197 | pr_debug("Set Random DataIN PDU Offsets to %u for" | |
198 | " Initiator Node %s\n", a->random_datain_pdu_offsets, | |
199 | iscsit_na_get_initiatorname(acl)); | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
f760903a | 204 | int iscsit_na_random_datain_seq_offsets( |
e48354ce NB |
205 | struct iscsi_node_acl *acl, |
206 | u32 random_datain_seq_offsets) | |
207 | { | |
208 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
209 | ||
210 | if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) { | |
211 | pr_err("Requested Random DataIN Sequence Offsets: %u" | |
212 | " not 0 or 1\n", random_datain_seq_offsets); | |
213 | return -EINVAL; | |
214 | } | |
215 | ||
216 | a->random_datain_seq_offsets = random_datain_seq_offsets; | |
217 | pr_debug("Set Random DataIN Sequence Offsets to %u for" | |
218 | " Initiator Node %s\n", a->random_datain_seq_offsets, | |
219 | iscsit_na_get_initiatorname(acl)); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
f760903a | 224 | int iscsit_na_random_r2t_offsets( |
e48354ce NB |
225 | struct iscsi_node_acl *acl, |
226 | u32 random_r2t_offsets) | |
227 | { | |
228 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
229 | ||
230 | if (random_r2t_offsets != 0 && random_r2t_offsets != 1) { | |
231 | pr_err("Requested Random R2T Offsets: %u not" | |
232 | " 0 or 1\n", random_r2t_offsets); | |
233 | return -EINVAL; | |
234 | } | |
235 | ||
236 | a->random_r2t_offsets = random_r2t_offsets; | |
237 | pr_debug("Set Random R2T Offsets to %u for" | |
238 | " Initiator Node %s\n", a->random_r2t_offsets, | |
239 | iscsit_na_get_initiatorname(acl)); | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
f760903a | 244 | int iscsit_na_default_erl( |
e48354ce NB |
245 | struct iscsi_node_acl *acl, |
246 | u32 default_erl) | |
247 | { | |
248 | struct iscsi_node_attrib *a = &acl->node_attrib; | |
249 | ||
250 | if (default_erl != 0 && default_erl != 1 && default_erl != 2) { | |
251 | pr_err("Requested default ERL: %u not 0, 1, or 2\n", | |
252 | default_erl); | |
253 | return -EINVAL; | |
254 | } | |
255 | ||
256 | a->default_erl = default_erl; | |
257 | pr_debug("Set use ERL0 flag to %u for Initiator" | |
258 | " Node %s\n", a->default_erl, | |
259 | iscsit_na_get_initiatorname(acl)); | |
260 | ||
261 | return 0; | |
262 | } |